Altitude and Airspeed Handset, Gunnery System B-29 Superfortress F3D Skyknight They are quite difficult to

They are quite difficult to find

This model has two adjustable vanes (peep and far) with prism for viewing compass bearing and spirit level

25 inches diameter and ~5

This is a Gyrosyn Compass Master Indicator Type C

this instrument was used in aircraft such as the Bf109G

Altitude and Airspeed Handset, Gunnery System B-29 Superfortress F3D Skyknight They are quite difficult toHere is an original WWII era Altitude and Airspeed Handset as used in the Boeing B 29 Superfortress bomber. This was a module of the B 29's Central Fire Control System, the remote control gun turret system. This critical component was installed at the Navigator's station in the B 29 (see image of the station from the B 29 flight manual. Handset is at the bottom of the photo). It was his responsibility to ensure that the dials on the handset for